To profitably produce corn in on Midwestern farms, nitrogen must be added to the soil. But the practice has an unwanted environmental impact: water contamination. A University of Nebraska professor thinks he may have a solution. Special correspondent Ariana Brocious…

For 226 years, men led the U.S. Patent and Trademark Office, the agency that fosters American innovation and entrepreneurship. Enter Michelle Lee, the agency’s first female leader. A Silicon Valley native who built a radio with her father in…